Nearly two months into the school year, city teachers are no longer pretending kids will learn much this year — with some even doing other things besides teaching during online classes. As The Post’s Susan Edelman reports, one student at Edward R. Murrow HS in Brooklyn says his teacher, Nyeesha Archer, gave her algebra lesson from a car. “How much of a lesson could it be?” he wondered. A month ago, another “taught” from a hammock, while interacting with his kids at the same time. The teacher “probably figured half the class was sleeping anyway. That’s the thing about online school. Half the kids in the class are playing video games or asleep,” the high-schooler said.